US20090213751A1 - Optimum Selection of a Communication Network in the Location Area of a Terminal - Google Patents

Optimum Selection of a Communication Network in the Location Area of a Terminal Download PDF

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Publication number
US20090213751A1
US20090213751A1 US11/886,893 US88689306A US2009213751A1 US 20090213751 A1 US20090213751 A1 US 20090213751A1 US 88689306 A US88689306 A US 88689306A US 2009213751 A1 US2009213751 A1 US 2009213751A1
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Prior art keywords
network
mobile station
unit
communication network
communication
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Abandoned
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US11/886,893
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English (en)
Inventor
Dirk Langefeld
Rainer Liebhart
Martin Oettl
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Nokia Solutions and Networks GmbH and Co KG
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Nokia Siemens Networks GmbH and Co KG
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Filing date
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Application filed by Nokia Siemens Networks GmbH and Co KG filed Critical Nokia Siemens Networks GmbH and Co KG
Assigned to NOKIA SIEMENS NETWORKS GMBH & CO KG reassignment NOKIA SIEMENS NETWORKS GMBH & CO KG ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: LANGEFELD, DIRK, LIEBHART, RAINER, OETTL, MARTIN
Publication of US20090213751A1 publication Critical patent/US20090213751A1/en
Abandoned legal-status Critical Current

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/18—Selecting a network or a communication service
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W80/00—Wireless network protocols or protocol adaptations to wireless operation
    • H04W80/08—Upper layer protocols
    • H04W80/10—Upper layer protocols adapted for application session management, e.g. SIP [Session Initiation Protocol]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/02—Terminal devices
    • H04W88/06—Terminal devices adapted for operation in multiple networks or having at least two operational modes, e.g. multi-mode terminals

Definitions

  • the invention relates to a method and a mobile station for selection of a communication network and for connecting a mobile station into a communication network within the coverage area of which it is located.
  • Interworking WLANs I-WLAN, Interworking Wireless Local Area Network
  • WIMAX and xDSL access networks WIMAX and xDSL access networks, with the intention being with WIMAX especially to have a similar architecture for connection to mobile radio as with WLAN.
  • One of the most significant problems in conjunction with wireless access networks such as WLAN is the network search. In such cases both searching for an optimum access network (a number of WLAN networks can be operated in one hotspot for example) and also searching during roaming for an optimum mobile radio network or further intermediate networks which can be reached via the access network is a problem to be resolved.
  • the terminal has sought out an I-WLAN, this can be connected to a number of mobile networks. These communication networks must be notified to the terminal by the I-WLAN so that the terminal can seek out a preferred mobile radio network.
  • the lists of the preferred networks are either stored in the terminal or on the USIM card. Especially when roaming, in which case the I-WLAN has no direct connection to the home mobile radio network of the subscriber, it is for important for the terminal to select a preferred roaming partner of its home network in order to save connection and roaming costs and be able to make use of as many services as possible.
  • the terminal uses preconfigured lists of preferred I-WLANs and mobile radio networks to select an I-WLAN and mobile radio network to which it connects.
  • a method is also described in the standard for how an I-WLAN can communicate its interworking capability and the connected mobile radio networks to the terminal during its search for WLAN networks. Since this information (so-called SSID, Service Set Id) is sent out before connection into the WLAN network by the WLAN radio stations using a broadcast (multi-transmission method), this would lead to a simplification of the search procedure.
  • SSID Service Set Id
  • WLAN 802.11 technology is not standardized by 3GPP but by IEEE, 3GPP cannot mandatorily prescribe the structures of the SSID in the WLAN broadcast.
  • the SSID field has a restricted length (32 bytes), so that it may also be possible for not all information to be stored there about all connected mobile radio networks.
  • the SSID is also configured by the WLAN network operator and can thus be incorrect or misleading.
  • the 3GPP standard has so far offered only the optional possibility of sending out information within the WLAN-SSID information about the interworking capability of a WLAN.
  • the connected mobile radio networks can only identify the terminal once it has connected to all available I-WLANs and has received the corresponding data from them.
  • the optimum access network and the preferred mobile radio network are defined by statically preconfigured lists on the (U)SIM card or the terminal itself. These lists are either stored once by the home network operator on the(U)SIM or can be manually supplemented and prioritized by the user. This method of operation is inflexible and expensive for the network operator, for the subscriber it is difficult and inconvenient.
  • the object of the invention is to propose a simple and an efficient option by which a terminal can select a communication network.
  • a core of the invention is to be seen as making the selection of a communication network, for example an access network, a WLAN-network, a cellular mobile radio network, an IP network or a further communication network more flexible and faster by using a further network unit, for example a registration unit, a database, a memory unit etc. for example in the HPLMN network (home network).
  • this further network unit can also be operated in the Internet or in another communication network for example and accept data over all possible communication networks. This naturally requires ongoing discussions between the network operators and a body which then operates this further network unit.
  • This further network unit could be called an “IP Access Register”.
  • the terminal searches as previously for example for an access network with I-WLAN capabilities in a hotspot (the discrimination between I-WLAN and “normal” WLAN networks can for example be speeded up by specific SSID values). If any given I-WLAN network has now been found, the search is ended by the terminal and the terminal connects temporarily into this I-WLAN.
  • the I-WLAN allows the terminal in this state to send a request via a network unit of the I-WLAN to the further network unit, for example in its home network. This can be achieved for example by specific port filters in the access routers or by using virtual LAN networks.
  • Such a request can be executed with an SIP, H.323, HTTP, for security reasons HTTPS or another (secure) (signaling) protocol, with the server authentication being sufficient in this case.
  • the terminal can connect to any given WLAN and for example to reach the further network unit in the home network via the Internet for example.
  • a network unit for example an HTTP proxy server, in the I-WLAN or for example any given connected cellular mobile radio network uses origin information in such cases such as the MCC (Mobile Country Code) and the MNC (Mobile Network Code) or x/y location coordinates in the request message.
  • the terminal could also perform this function if it has this information available to it (e.g. using positioning methods via GPS (Global Positioning System)).
  • the terminal or the application on the terminal can additionally send data or requests such as the bandwidths required for example or the security of the access network to the further network unit, which can be taken into account by the further network unit in selecting the communication networks.
  • the further network unit receives this request and determines from the origin data and the additional requirements of the terminal the optimum access network or communication network in the hotspot (coverage area of the communication network), the preferred visited communication network VPLMN and where necessary further intermediate networks or communication networks, and sends this information, in the form of the SSID and MNC/MCC for example, in a response message back to the terminal.
  • this information in the form of the SSID and MNC/MCC for example, in a response message back to the terminal.
  • this information by contrast with the data which is available pre-configured in the terminal, can be flexibly adapted in accordance with country, location, tariff, network loading and time.
  • the terminal After receiving the data, the terminal connects into a communication network depending on the information received.
  • the terminal for example a mobile computer, a computer, a mobile radio station, a mobile organizer etc., could also interrogate the further network unit at periodic intervals or after the network configuration has changed (e.g. by changing the location) in order if possible to obtain more favorable connection co-ordinates.
  • Authentication messages are sent in accordance with the 3GPP standard via the visited mobile network which has been predetermined by the home network operator. This obviates the need for a reconciliation between the available mobile networks with those stored on the (U)SIM card. Existing (U)SIM cards can even continue to be used.
  • the terminal After successful authentication in the home network the terminal is in a position for example to establish a connection into this network via the visited mobile radio network and use the services in the home network.
  • This invention disclosure describes a method for how a central further network unit, for example a register unit, may be used to enable access to IP-based radio technologies such as WLAN to be simplified and optimized for mobile radio operators and subscribers.
  • the selection procedure is thus accelerated and the use of resources in the terminal is reduced.
  • the described register unit also offers the opportunity of storing a further data which can be relevant for the terminal or the communication network for an optimized roaming or handover.
  • IP-based access networks can in such cases be specified by 3GPP or can quite generally simply be connected via a router to the 3GPP core network.
  • FIG. 1 the method in accordance with the invention with reference to a simplified system architecture
  • FIG. 2 an inventive mobile station.
  • FIG. 1 shows how a mobile station, for example a mobile radio terminal, a mobile computer, a mobile organizer, a computer etc., in a hotspot can connect itself temporarily into a communication network VPLMN 1 via the access network I-WLAN 1 and send a request by means of the HTTPS protocol via a network unit HTTP Proxy of the communication network VPLMN 1 to a further network unit WLAN DB of the home network HPLMN of the mobile station MS.
  • the network unit HTTP Proxy can in this case be a proxy server, a network unit of the access network I-WLAN 1 etc.
  • the request could be supplemented by the network unit HTTP Proxy or also by the mobile station MS with at least one item of information such as the country code, the network code of the communication network currently being used, the location information relating to the current location of the mobile station MS etc.
  • the mobile station MS in addition to the request, could also insert data or requests such as the bandwidth required for example, the security requirements for the communication network etc.
  • the further network unit WLAN DB for example a register a unit, a database, a memory unit etc in the home network WLAN DB checks the request and sends a response with the least one item of information, for example the SSID identity of the preferred access network I-WLAN 2 and the mobile country code or mobile Network Code MNC 2 /MCC 2 of the preferred (visited) communication network VPLMN 2 .
  • Temporary in this case means that the mobile station only connects into the communication network VPLMN 1 via the access network I-WLAN 1 to be able to make the request to the further network unit.
  • the mobile station MS After receiving the at least one item of information contained in the response, the mobile station MS, depending on the information received, connects into the communication network VPLMN 2 (for example via the authentication network unit AAA Proxy WAG) via the access network I-WLAN 2 (for example via the WLAN radio access point WLAN AP), authenticates itself in respect of the home network HPLMN (for example at the authentication network unit AAA PDG) in accordance with the 3GPP standard and thereafter to sets up a connection to execute a communication to the home network HPLMN, in order to use specific subscription services there for example.
  • a cellular mobile radio network, a WLAN network, an IP network, an I-WLAN network etc. can be used as a communication network or access network.
  • the mobile station could, because of a network configuration or also at periodic or even no-periodic intervals, send such a request relating to at least one communication network to be used for the communication to the further network unit WLAN DB and thus have the opportunity of always selecting the optimum communication network for communication.
  • FIG. 2 shows a mobile station MS for executing the inventive method with a receive unit E, a transmit unit S and a processing unit V.

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  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Small-Scale Networks (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)
US11/886,893 2005-03-24 2006-03-09 Optimum Selection of a Communication Network in the Location Area of a Terminal Abandoned US20090213751A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102005013908.6 2005-03-24
DE102005013908A DE102005013908A1 (de) 2005-03-24 2005-03-24 Optimale Auswahl eines Kommunikationsnetzes im Aufenthaltsort eines Endgerätes
PCT/EP2006/060598 WO2006100184A1 (de) 2005-03-24 2006-03-09 Optimale auswahl eines kommunikationsnetzes im aufenthaltsort eines endgerätes

Publications (1)

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US20090213751A1 true US20090213751A1 (en) 2009-08-27

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US11/886,893 Abandoned US20090213751A1 (en) 2005-03-24 2006-03-09 Optimum Selection of a Communication Network in the Location Area of a Terminal

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US (1) US20090213751A1 (ja)
EP (1) EP1864438A1 (ja)
JP (1) JP4714261B2 (ja)
CN (1) CN101147363A (ja)
AU (1) AU2006226450B2 (ja)
DE (1) DE102005013908A1 (ja)
RU (1) RU2375846C2 (ja)
WO (1) WO2006100184A1 (ja)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080175267A1 (en) * 2007-01-23 2008-07-24 Samsung Electronics Co., Ltd. Apparatus and method for providing pdg information
US20110252141A1 (en) * 2008-12-19 2011-10-13 Telefonaktiebolaget Lm Ericsson (Publ) Method and arrangement for handling resource data
US9888503B2 (en) 2012-07-03 2018-02-06 Interdigital Patent Holdings, Inc. Fast initial link setup discovery frames
US10057301B2 (en) * 2011-04-29 2018-08-21 Comcast Cable Communications, Llc Obtaining services through a local network
US10148520B2 (en) * 2014-05-19 2018-12-04 Comcast Cable Communications, Llc Device provisioning
US10405271B2 (en) 2016-10-25 2019-09-03 Samsung Electronics Co., Ltd. Method and apparatus for selecting access network in wireless communication system
US10973082B2 (en) 2017-06-19 2021-04-06 Huawei Technologies Co., Ltd. Registration method, session establishment method, terminal, and AMF entity
US11700575B2 (en) 2018-05-21 2023-07-11 Nokia Technologies Oy Managing VPLMN configuration updates in the UE due to home PLMN configuration changes

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104735736B (zh) * 2013-12-24 2018-05-15 中国移动通信集团公司 一种网络接入方法及用户终端
US9769737B2 (en) * 2015-04-10 2017-09-19 Telefonaktiebolaget Lm Ericsson (Publ) System and method to support inter-wireless local area network communication by a radio access network
CN105517078A (zh) * 2015-11-20 2016-04-20 小米科技有限责任公司 网络连接的切换方法及装置
CN105700974A (zh) * 2016-01-13 2016-06-22 惠州Tcl移动通信有限公司 移动终端文件备份系统、方法及移动终端
ES2938314T3 (es) 2016-01-14 2023-04-10 Nokia Technologies Oy Mejoras al proceso de selección de e-PDG en un equipo de usuario en un país visitado
CN109151924B (zh) 2017-06-16 2024-03-01 华为技术有限公司 通信方法及接入网设备、核心网设备
EP3664506A4 (en) * 2017-11-16 2020-08-05 Guangdong Oppo Mobile Telecommunications Corp., Ltd. NETWORK CONFIGURATION PROCEDURE, DEVICE, NETWORK ELEMENT AND SYSTEM

Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20010006517A1 (en) * 1997-10-31 2001-07-05 Jie Lin Asymmetric data access scheme
US20010016491A1 (en) * 2000-01-05 2001-08-23 Shigeru Imura Function limiting method for telephone communication terminal, telephone communication method, telephone communication terminal and repeating center equipment
US20020119774A1 (en) * 2001-02-26 2002-08-29 Regina Johannesson Method for PLMN selection
US6564055B1 (en) * 2000-01-21 2003-05-13 Telecommunication Systems, Inc. Intelligent roaming database (IRDB) updating
US20030121967A1 (en) * 2001-12-28 2003-07-03 Interdigital Technology Corporation Portable device service payments by multiple means
US6643511B1 (en) * 1999-04-12 2003-11-04 Telefonaktiebolaget Lm Ericsson (Publ) Administration of regional subscription restriction in a network that includes a gateway location register
US20040066756A1 (en) * 2002-10-08 2004-04-08 Kalle Ahmavaara Network selection in a wlan
US20040072578A1 (en) * 2001-02-23 2004-04-15 Heinz-Peter Keutmann Location update procedure when roaming from a first communication service domain to a second communications service domain
US20040213260A1 (en) * 2003-04-28 2004-10-28 Cisco Technology, Inc. Methods and apparatus for securing proxy Mobile IP
US6868416B2 (en) * 1999-12-03 2005-03-15 Korea Telecommunication Authority Internet addressing architecture and hierarchical routing method thereof
US20050088999A1 (en) * 2002-01-31 2005-04-28 Waylett Nicholas S. Communication system having a community wireless local area network for voice and high speed data communication
US20050117602A1 (en) * 2002-05-13 2005-06-02 Michael Carrigan Control of PLMN messaging services in IP domains
US7283507B2 (en) * 2004-05-06 2007-10-16 Research In Motion Limited Apparatus, and associated method, for facilitating WLAN selection by a mobile node

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2003304261A1 (en) 2003-06-30 2005-01-13 Telecom Italia S.P.A. A method for network selection in communication networks, related network and computer program product therefor
CN1283072C (zh) * 2003-07-03 2006-11-01 华为技术有限公司 无线局域网中用户终端网络选择信息的处理方法
CN1271822C (zh) * 2003-07-04 2006-08-23 华为技术有限公司 无线局域网中用户终端网络选择信息的交互处理方法
CN1265589C (zh) * 2003-07-31 2006-07-19 华为技术有限公司 无线局域网中用户终端选择接入移动网的优化交互方法

Patent Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20010006517A1 (en) * 1997-10-31 2001-07-05 Jie Lin Asymmetric data access scheme
US6643511B1 (en) * 1999-04-12 2003-11-04 Telefonaktiebolaget Lm Ericsson (Publ) Administration of regional subscription restriction in a network that includes a gateway location register
US6868416B2 (en) * 1999-12-03 2005-03-15 Korea Telecommunication Authority Internet addressing architecture and hierarchical routing method thereof
US20010016491A1 (en) * 2000-01-05 2001-08-23 Shigeru Imura Function limiting method for telephone communication terminal, telephone communication method, telephone communication terminal and repeating center equipment
US6564055B1 (en) * 2000-01-21 2003-05-13 Telecommunication Systems, Inc. Intelligent roaming database (IRDB) updating
US20040072578A1 (en) * 2001-02-23 2004-04-15 Heinz-Peter Keutmann Location update procedure when roaming from a first communication service domain to a second communications service domain
US20020119774A1 (en) * 2001-02-26 2002-08-29 Regina Johannesson Method for PLMN selection
US20030121967A1 (en) * 2001-12-28 2003-07-03 Interdigital Technology Corporation Portable device service payments by multiple means
US20050088999A1 (en) * 2002-01-31 2005-04-28 Waylett Nicholas S. Communication system having a community wireless local area network for voice and high speed data communication
US20050117602A1 (en) * 2002-05-13 2005-06-02 Michael Carrigan Control of PLMN messaging services in IP domains
US20040066756A1 (en) * 2002-10-08 2004-04-08 Kalle Ahmavaara Network selection in a wlan
US20040213260A1 (en) * 2003-04-28 2004-10-28 Cisco Technology, Inc. Methods and apparatus for securing proxy Mobile IP
US7283507B2 (en) * 2004-05-06 2007-10-16 Research In Motion Limited Apparatus, and associated method, for facilitating WLAN selection by a mobile node

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080175267A1 (en) * 2007-01-23 2008-07-24 Samsung Electronics Co., Ltd. Apparatus and method for providing pdg information
US20080288616A1 (en) * 2007-01-23 2008-11-20 Samsung Electronics Co., Ltd. Apparatus and method for providing pdg information
US8306054B2 (en) * 2007-01-23 2012-11-06 Samsung Electronics Co., Ltd Apparatus and method for providing PDG information
US20110252141A1 (en) * 2008-12-19 2011-10-13 Telefonaktiebolaget Lm Ericsson (Publ) Method and arrangement for handling resource data
US9392070B2 (en) * 2008-12-19 2016-07-12 Telefonaktiebolaget Lm Ericsson (Publ) Method and arrangement for handling resource data
US10057301B2 (en) * 2011-04-29 2018-08-21 Comcast Cable Communications, Llc Obtaining services through a local network
US11546384B2 (en) * 2011-04-29 2023-01-03 Comcast Cable Communications, LLC. Obtaining services through a local network
US9888503B2 (en) 2012-07-03 2018-02-06 Interdigital Patent Holdings, Inc. Fast initial link setup discovery frames
US10616933B2 (en) 2012-07-03 2020-04-07 Interdigital Patent Holdings, Inc. Fast initial link setup discovery frames
US10148520B2 (en) * 2014-05-19 2018-12-04 Comcast Cable Communications, Llc Device provisioning
US10917306B2 (en) 2014-05-19 2021-02-09 Comcast Cable Communications, Llc Device provisioning
US12081408B2 (en) 2014-05-19 2024-09-03 Comcast Cable Communications, Llc Device provisioning
US11706094B2 (en) 2014-05-19 2023-07-18 Comcast Cable Communications, Llc Device provisioning
US10405271B2 (en) 2016-10-25 2019-09-03 Samsung Electronics Co., Ltd. Method and apparatus for selecting access network in wireless communication system
US11523465B2 (en) 2017-06-19 2022-12-06 Huawei Technologies Co., Ltd. Registration method, session establishment method, terminal, and AMF entity
US10973082B2 (en) 2017-06-19 2021-04-06 Huawei Technologies Co., Ltd. Registration method, session establishment method, terminal, and AMF entity
US11700575B2 (en) 2018-05-21 2023-07-11 Nokia Technologies Oy Managing VPLMN configuration updates in the UE due to home PLMN configuration changes
US12075347B2 (en) 2018-05-21 2024-08-27 Nokia Technologies Oy Managing VPLMN configuration updates in the UE due to home PLMN configuration changes

Also Published As

Publication number Publication date
CN101147363A (zh) 2008-03-19
AU2006226450A1 (en) 2006-09-28
RU2007139323A (ru) 2009-04-27
WO2006100184A1 (de) 2006-09-28
DE102005013908A1 (de) 2006-09-28
EP1864438A1 (de) 2007-12-12
AU2006226450B2 (en) 2009-06-11
RU2375846C2 (ru) 2009-12-10
JP2008535296A (ja) 2008-08-28
JP4714261B2 (ja) 2011-06-29

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